Online Course Discussion Forum

Math Challenging I-B Counting Probability

 
 
ShiHongyu的头像
Math Challenging I-B Counting Probability
ShiHongyu - 2019年12月16日 Monday 19:31
 

I do not really understand the meaning of the context of 2.18-2.20

 
ProfessorAreteem的头像
Re: Math Challenging I-B Counting Probability
ProfessorAreteem - 2019年12月17日 Tuesday 11:25
 

A checkerboard is similar to a chessboard. It is also an $8\times 8$ grid of squares, just this time the colors of the squares alternate between red and black. 


For problem 2.18 we want to place two distinct checkers (red and black) on squares of the same color, on 2.19 we want the red checker on a black square and the black checker on a red square, and on 2.20 we want them to be on squares of different colors.